WO1995022474A1 - Dispositif de mise sous pression du systeme pneumatique d'un camion - Google Patents

Dispositif de mise sous pression du systeme pneumatique d'un camion Download PDF

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Publication number
WO1995022474A1
WO1995022474A1 PCT/SE1995/000168 SE9500168W WO9522474A1 WO 1995022474 A1 WO1995022474 A1 WO 1995022474A1 SE 9500168 W SE9500168 W SE 9500168W WO 9522474 A1 WO9522474 A1 WO 9522474A1
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
air
engine
pressure
pneumatic
Prior art date
Application number
PCT/SE1995/000168
Other languages
English (en)
Inventor
Mats SABELSTRÖM
Ulrich Gobert
Original Assignee
Ab Volvo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ab Volvo filed Critical Ab Volvo
Priority to US08/693,045 priority Critical patent/US5906480A/en
Priority to JP52175995A priority patent/JP3581367B2/ja
Priority to EP95910059A priority patent/EP0740622B1/fr
Priority to AU18293/95A priority patent/AU1829395A/en
Priority to DE69510177T priority patent/DE69510177T2/de
Publication of WO1995022474A1 publication Critical patent/WO1995022474A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/16—Control of the pumps by bypassing charging air
    • F02B37/164—Control of the pumps by bypassing charging air the bypassed air being used in an auxiliary apparatus, e.g. in an air turbine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/08—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a device in a motor vehicle with an internal combustion engine supercharged by a com ⁇ pressor and with a compressed air system comprising an air- compressor.
  • auxiliary systems Todays trucks are often provided with different types of auxiliary systems to assist the driver and to make his work ⁇ place more comfortable.
  • One of these auxiliary systems con ⁇ sists of an air-compressor which is designed to provide the truck pneumatic brake system, for example, with sufficient compressed air.
  • Technical developments have brought forth more and more possibilities for utilizing compressed air for various purposes, which were not originally intended, such as air spring systems or suspension-level control both for transport/driving and unloading and loading purposes, both for the tractor and trailer.
  • Increasing insight into the utility and use of compressed air has accompanied the in ⁇ crease in the capacity or available volume per unit of time for compressed air systems. To a certain extent, the problem which this has posed has been solvable by using more or larger tanks, which are mounted on the truck frame.
  • the purpose of the present invention is to achieve a device of the type described by way of introduction which provides more effective precharging of the air-compressor at low engine rpm than what has been achieved in systems known up to now.
  • a great advantage of the invention is that in vehicles with air springs and in which it is possible to regulate the chassis to adapt it to different heights of loading docks, for example, it is possible for the driver, without delay, to raise the chassis/suspension of the unit immediately after starting the engine at low engine rpm and load.
  • Another advantage of the invention is that the installation can be completed when the engine is manufactured. This is possible by virtue of the fact that only one extra line needs to be drawn for system compressor air. One less airfilter is required since the system compressor air can always be drawn via a "clean" air line with the device according to the invention.
  • An additional advantage of the invention is that otherwise normally occurring unintentional introduction of oil into the pneumatic compressor can be minimized with a device according to the invention, because the pneumatic compressor can be continuously held under overpressure.
  • 1 designates a four-stroke internal combustion engine of diesel type
  • 2 designates the intake line to the engine and 3 the exhaust line.
  • a turbosystem comprising a turbine 4 and a turbocompressor 5 is connected in a conven ⁇ tional manner to the intake line 2 and the exhaust line 3.
  • the intake line 2 is branched from a line 6 between an air- filter 7 and the suction side of a mechanical compressor 8 driven by the engine 1.
  • the mechanical compressor 8 can be of any known type, but preferably of displacement type, for example a screw compressor, and is driven directly by the engine crankshaft via a V-belt transmission generally desig- nated 9.
  • An electronic control unit 11 turns the clutch on and off.
  • the control unit is supplied with signals representing the operating states of the engine 1 (represented by the dashdot lines in Fig. 1) .
  • the pressure side of the mechanical com ⁇ pressor 8 is coupled via a line 12 to the intake line 2 upstream of the turbocompressor 4, 5 but downstream of a mechanical check valve 13, which can be of any known type, e.g. a valve with a closure element in the form of a spring- loaded flap (see SE-9002849-9) .
  • the mechanical compressor 8 is engaged at low and intermedi- ate rpm and it is turned on and off by the electronic control unit 11. If the engine is working under full load with the compressor 8 activated, all charge air is required for fuel combustion. In this operating state, no air should be drawn off to the pneumatic compressor. Therefore, the engine elec- tronics see to it that a signal is sent to the control elec ⁇ tronic unit 11, which sees to it, via an input F to a sole ⁇ noid valve D, that air, instead of being drawn off from the pressure side of the turbocharger system, is taken from the line 6 between the airfilter 7 and the suction side of the mechanical compressor 8, and therefore the pneumatic compres ⁇ sor, here designated B, must do all of the work itself.
  • the mechanical compressor 8 After the check valve is opened, the mechanical compressor 8 has no function, and in order to reduce the engine fuel con ⁇ sumption and noise, as well as reducing wear on the compres ⁇ sor 8, the mechanical compressor is disengaged at this stage by the control unit 11, disengaging the clutch 10.
  • the pneumatic system can obtain its air from two different points in the engine combustion system, either from the line 2, where there is usually an airpressure above atmospheric pressure, or from the line 6 on the suction side of the mechanical engine compressor, where there is always atmos ⁇ pheric pressure. Air is drawn from one of these two lines, via an air-controlled alternative valve A. Which of its two positions the alternative valve assumes is determined by the operating states of the vehicle, in practice speed and/or engine rpm and/or gear selection, as well as load.
  • the pneu ⁇ matic compressor regardless of where it has obtained its air, pumps the compressed air into a tank I and then to the points of consumption H.
  • the compressor is relieved when the pressure in the vehicle pneumatic system has reached a speci ⁇ fied pressure, and the compressor will then no longer be able to pump a higher pressure than about 5 bar, which is lower than the lower pressure in the vehicle pneumatic system.
  • the compressor B is relieved, it is therefore important that it be supplied with air at atmospheric pressure, i.e. from the line 6. If the compressor should erroneously be supplied with air from line 2, i.e. compressed air instead, the com- pressor would pump out a pressure higher than the system pressure, which is very unadvisable.
  • a relieved compressor When, as in this prefer ⁇ red case here, a relieved compressor is used, there is a dis ⁇ tributor valve E which, under the influence of a regulator C, which senses the pressure in the system in the vehicle, opens at a predetermined pressure, the so-called de-control pres ⁇ sure, thus pressurizing the port 15 of the compressor, thus relieving the compressor and switching over the distributor valve E so that the alternative valve A takes air from the line 6.
  • the compressor is of such a design that it is capable at relief of being supplied with compres ⁇ sed air instead of air at atmospheric pressure, the distri ⁇ butor valve E can be eliminated.
  • an additional circuit which comprises a solenoid valve D, which is supplied with air from the tank I.
  • the solenoid valve opens as a result of a voltage established via F (control voltage) , said signal coming from the motor electronics and seeing to it that air is sent to the alternative valve A via the distributor valve I and seeing to it that the air to the pneumatic compressor B is drawn from the line 6.
  • F control voltage
  • One of the criteria for such a signal being sent is that the vehicle speed exceeds a certain speed, e.g. 7 km/h, when it is assum ⁇ ed that the air of the mechanical compressor is required to provide the vehicle engine with combustion air.
  • a speed sensor in the vehicle suitably integrated in the speedometer function. Under extraordinary conditions, for example when the vehicle is to start at full load on a hill, the signal via F can be given at a lower speed, i.e. the motor electronics are soon to be coupled to the control unit 11 in such a way that this case is covered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

La présente invention concerne un dispositif de mise sous pression du système pneumatique d'un camion (HL) alimentant, par exemple, le système de freinage pneumatique ou le système de suspension pneumatique. Le camion est muni d'au moins un compresseur (8) permettant la surcompression de l'air destiné à son moteur à combustion interne (1). Ledit compresseur est actionné au-dessous de la valeur médiane du régime moteur. Lorsque les conditions de fonctionnement le permettent, la compression s'effectue à partir d'air prélevé dans le système de compression d'air, de préférence du côté sous pression du compresseur mécanique (8).
PCT/SE1995/000168 1994-02-18 1995-02-17 Dispositif de mise sous pression du systeme pneumatique d'un camion WO1995022474A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US08/693,045 US5906480A (en) 1994-02-18 1995-02-17 Device for charging a truck pneumatic system
JP52175995A JP3581367B2 (ja) 1994-02-18 1995-02-17 トラックの空気圧系の給気装置
EP95910059A EP0740622B1 (fr) 1994-02-18 1995-02-17 Dispositif de mise sous pression du systeme pneumatique d'un camion
AU18293/95A AU1829395A (en) 1994-02-18 1995-02-17 Device for charging a truck pneumatic system
DE69510177T DE69510177T2 (de) 1994-02-18 1995-02-17 Gerät zur unterdrucksetzung eines pneumatischen kraftfahrzeugsystems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9400575A SE9400575L (sv) 1994-02-18 1994-02-18 Anordning för uppladdning av luftsystem på lastfordon
SE9400575-8 1994-02-18

Publications (1)

Publication Number Publication Date
WO1995022474A1 true WO1995022474A1 (fr) 1995-08-24

Family

ID=20393009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000168 WO1995022474A1 (fr) 1994-02-18 1995-02-17 Dispositif de mise sous pression du systeme pneumatique d'un camion

Country Status (7)

Country Link
US (1) US5906480A (fr)
EP (1) EP0740622B1 (fr)
JP (1) JP3581367B2 (fr)
AU (1) AU1829395A (fr)
DE (1) DE69510177T2 (fr)
SE (1) SE9400575L (fr)
WO (1) WO1995022474A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9206793B2 (en) 2012-09-19 2015-12-08 Hyundai Motor Company Apparatus and method for generating air pressure in eco-friendly vehicle
CN112789404A (zh) * 2018-10-12 2021-05-11 沃尔沃卡车集团 压缩空气生成系统和包括这种系统的机动车辆

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE514089C2 (sv) * 1999-04-16 2000-12-18 Volvo Lastvagnar Ab Tryckluftssystem i ett fordon, innefattande en oxidationskatalysator för rening av tryckluften
US6345772B1 (en) * 1999-07-30 2002-02-12 Case Corporation Field marking system
US6682459B1 (en) * 2000-08-08 2004-01-27 Bendix Commercial Vehicle Systems Llc Electronic air charge controller for vehicular compressed air system
DE10111532A1 (de) * 2001-03-10 2002-09-19 Deere & Co Reifendruckeinstellanlage
DE10240162A1 (de) * 2002-08-30 2004-03-18 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Luftbedarfsgesteuerte Kompressoranordnung, insbesondere für Nutzfahrzeuge
DE10252975A1 (de) 2002-11-14 2004-06-03 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kompressoranordnung mit einer Zusatzverdichtereinheit, insbesondere für Nutzfahrzeuge
GB2398280A (en) * 2003-02-11 2004-08-18 Syltone Uk Ltd Vehicle engine driven air compressor
DE10343621A1 (de) * 2003-09-20 2005-04-28 Deere & Co Reifendruckeinstellanlage
SE526215C2 (sv) * 2004-02-18 2005-07-26 Scania Cv Abp Tryckluftssystem för fordon där tryckluftssystemet förbereds för framtida tryckuttag samt ett förfarande för lufttrycksreglering
US20060127224A1 (en) * 2004-12-13 2006-06-15 Bendix Commercial Vehicle Systems Llc Air compressor control
US7632076B2 (en) * 2005-03-02 2009-12-15 Bendix Commercial Vehicle Systems Llc Air supply system control
US7976285B2 (en) * 2006-06-05 2011-07-12 Paccar Inc Electronic control for heavy duty truck compressed air charging system
DE102008026028A1 (de) * 2008-05-30 2009-12-03 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kompressorsystem und Verfahren zum Betreiben eines Kompressorsystems
DE102008031317A1 (de) * 2008-07-02 2010-01-07 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kompressorsystem mit beschränktem Ansaugladedruck
JP5269575B2 (ja) * 2008-12-18 2013-08-21 Ｕｄトラックス株式会社 車両の空気圧縮機構
DE102009007690B4 (de) 2009-02-05 2019-06-06 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Verfahren und Vorrichtung zum Regeln eines Ladeluftdrucks einer Verbrennungskraftmaschine eines Fahrzeugs
CN102452368A (zh) * 2010-10-21 2012-05-16 上海申龙客车有限公司 一种环保型城市客车气路控制设备
DE102010055692A1 (de) 2010-12-22 2012-06-28 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Ventileinrichtung zur Steuerung der Luftzufuhr für einen Kompressor eines Fahrzeugs sowie Kompressorsystem und Verfahren zur Steuerung eines Kompressorsystems
EP2888497B1 (fr) 2012-08-23 2017-06-28 Pierburg Pump Technology GmbH Pompe à fluide mécanique entraînée par moteur à combustion
US9976606B2 (en) 2012-08-23 2018-05-22 Pierburg Pump Technology Gmbh Mechanical combustion-engine-driven fluid pump
DE102016011502A1 (de) * 2016-09-21 2018-03-22 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Kompressorsystem für ein Nutzfahrzeug
US10690066B2 (en) * 2017-09-05 2020-06-23 Ford Global Technologies, Llc Method and system for pressurization of depressurized objects

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011360A1 (de) * 1980-03-25 1981-10-01 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover Anlage zur erzeugung von druckluft in einem fahrzeug
SE458546B (sv) * 1985-07-04 1989-04-10 Unitedturbine Ab & Co Kommandi Anordning vid foerbraenningsmotor (10) med minst en avgasturbindriven laddningsluftkompressor
SE467269B (sv) * 1990-09-06 1992-06-22 Volvo Penta Ab Oeverladdad foerbraenningsmotor
WO1993023660A1 (fr) * 1992-05-14 1993-11-25 Opcon Autorotor Ab Dispositif comprenant un moteur a combustion interne a suralimentation et un reservoir d'air comprime

Family Cites Families (3)

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US2350896A (en) * 1939-02-15 1944-06-06 Jde Hans Supercharger-regulator for airplane cabins
US2489540A (en) * 1948-06-23 1949-11-29 Gen Motors Corp Vehicle air brake system
US3204859A (en) * 1964-01-06 1965-09-07 Cooper Bessemer Corp Gas compressor system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011360A1 (de) * 1980-03-25 1981-10-01 Wabco Fahrzeugbremsen Gmbh, 3000 Hannover Anlage zur erzeugung von druckluft in einem fahrzeug
SE458546B (sv) * 1985-07-04 1989-04-10 Unitedturbine Ab & Co Kommandi Anordning vid foerbraenningsmotor (10) med minst en avgasturbindriven laddningsluftkompressor
SE467269B (sv) * 1990-09-06 1992-06-22 Volvo Penta Ab Oeverladdad foerbraenningsmotor
WO1993023660A1 (fr) * 1992-05-14 1993-11-25 Opcon Autorotor Ab Dispositif comprenant un moteur a combustion interne a suralimentation et un reservoir d'air comprime

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9206793B2 (en) 2012-09-19 2015-12-08 Hyundai Motor Company Apparatus and method for generating air pressure in eco-friendly vehicle
CN112789404A (zh) * 2018-10-12 2021-05-11 沃尔沃卡车集团 压缩空气生成系统和包括这种系统的机动车辆
CN112789404B (zh) * 2018-10-12 2022-07-26 沃尔沃卡车集团 压缩空气生成系统和包括这种系统的机动车辆

Also Published As

Publication number Publication date
DE69510177D1 (de) 1999-07-15
DE69510177T2 (de) 1999-11-18
EP0740622A1 (fr) 1996-11-06
JP3581367B2 (ja) 2004-10-27
EP0740622B1 (fr) 1999-06-09
SE9400575L (sv) 1995-08-19
US5906480A (en) 1999-05-25
SE9400575D0 (sv) 1994-02-18
JPH09509119A (ja) 1997-09-16
AU1829395A (en) 1995-09-04

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